文中论述了在地球赤道上空,地月距离存在4.425a 的变化周期,是由于月近地点在8.85a的周期性运移中,每到黄径0°和180°(赤道线上)在地球自转的背景下使地月距效果相同所致。而每年的地近日点(1月3日或4日)正置圣诞节过后几天,因此,日、月、地相对运动每隔4.425a 在圣诞节前后三者距离总会达到最近。本文计算了1910～1991年圣诞节前后赤道上空地月距离的变化,发现日、月、地最近时与厄尔尼诺、地球自转、海平面变化,地裂缝等自然现象的发生存在着统计上可以认可的相关性。 In the paper, there is a period of 4.425a over the Earth’s equator, which is due to the periodic rotation of the monthly perigee at 8.85a and every rotation of the yellow at 0 ° and 180 ° (on the equator) Under the background of the effect of the same result from the moon. However, the annual daily arrival time (January 3 or 4) is just a few days after Christmas. Therefore, the relative movement between Japan, the month and the earth always reaches the nearest distance before and after Christmas every 4.425a. This paper calculates the change of lunar distance over the equator before and after Christmas from 1910 to 1991 and finds that the occurrence of natural phenomena such as El Niño, Earth rotation, sea level change and ground fissure are statistically acceptable Relevance.